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9p: trans_fd, bail out if recv fcall if missing

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req->rc is pre-allocated early on with p9_tag_alloc and shouldn't be missing

Signed-off-by: Dominique Martinet <dominique.martinet@cea.fr>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
This commit is contained in:
Dominique Martinet 2015-09-07 17:06:54 +02:00 committed by Eric Van Hensbergen
parent 947867aa19
commit 3053600ed4
1 changed files with 6 additions and 7 deletions
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13
net/9p/trans_fd.c
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@ -356,13 +356,12 @@ static void p9_read_work(struct work_struct *work)
}
if (m->req->rc == NULL) {
m->req->rc = kmalloc(sizeof(struct p9_fcall) +
m->client->msize, GFP_NOFS);
if (!m->req->rc) {
m->req = NULL;
err = -ENOMEM;
goto error;
}
p9_debug(P9_DEBUG_ERROR,
"No recv fcall for tag %d (req %p), disconnecting!\n",
m->rc.tag, m->req);
m->req = NULL;
err = -EIO;
goto error;
}
m->rc.sdata = (char *)m->req->rc + sizeof(struct p9_fcall);
memcpy(m->rc.sdata, m->tmp_buf, m->rc.capacity);